Disabling mdns only for reverse lookups outside the local subnet(s) would not solve the problem. The test3.c example program uses a non- local, reserved address because that's a convenient way to illustrate that the problem is not caused by the local DNS configuration, but the actual delays I'm experiencing occur when connecting to an Ubuntu host from a non-Ubuntu system on a local subnet, for example with ssh, causing he Ubuntu host to do a reverse lookup of a local address. The standard DNS reverse lookup for that address resolves to NXDOMAIN in a few milliseconds, but since the connecting non-Ubuntu system is not running an mdns responder, the subsequent (pointless, IMO) mdns lookup takes several seconds to time out.
-- mdns listed in nsswitch.conf causes excessive time for dns lookups https://bugs.launchpad.net/bugs/94940 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
